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Bonneville Records are set on a long and short course system. Long course system, vehicles over 175 mph, is a 5 mile track (2 miles to get up to speed, then three one mile timed segments). Short Course system, vehicles under 175 mph, is a 3 mile track (2 miles to get up to speed, then one timed mile). All records set at Bonneville are by a qualifing run (over exisiting record), and the next morning making a return run, these two speeds are averaged for the record. All speeds used in the averaging method must be over the SAME relative mile.